AM05-14-005 大気・海洋間物質輸送に進行波が与える影響に関する直接数値計算(乱流熱物質移動および反応流1,一般講演)

概要

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Direct numerical simulation was applied to the turbulent boundary layer over traveling waves with gentle wave steepness ak=0.1, where a and k are wave amplitude and wave number, respectively, of the traveling wave, and the effects of the traveling waves without breaking to the mass transfer across air-water interface were investigated. The results show that scalar flux at the wave surface, which is controlled only by the motion of turbulent eddies in air side, decreases with increasing wave age. The scalar flux at the wave surface correlates well with the wave-induced scalar flux-<w^^〜T^^〜>at z_+≥10. On the contrary, mass transfer coefficient, which is controlled by the turbulent eddies in liquid side, is estimated from the shear stress distribution at the wave surface and increases with increasing wave age.
2005-09-05